Chapter 8: Additive Manufacturing Flashcards
What is Additive Manufacturing (AM) and what are its other names
AKA Rapid prototyping and 3d printing
the process of joining materials to make objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies
Benefits of AM
- More flexible
- Saved materials by optimizing structure
- Shortened lead time
- On-site manufacturing
- Can be used to make plastic concepts, metal tools, and biomaterials
What are some AM technologies
- VAT or VPP
- Material Extrusion
- DED
- PBF
- Material Jetting
- Binder Jetting
- Sheet Lamination
- 4D printing
What is Vat Photopolymerisation’s (VPP) feeding material and mechanisms
Feeding material: photo-curable liquid resin
Mechanisms: In-situ formation of cross-linked networks induced by light, UV, etc
What is the feeding material of Material Extrusion (ME)
Plastic filaments
What are the primary mechanisms of Material Extrusion (ME)
Plastic filaments are heated into a molten state and extruded out of the printing nozzle. When heat dissipates, the paste-mode material solidifies
What is the feeding material for Directed Energy Deposition DED
Metal / Ceramic powders
What is the mechanism of DED
laser melts powders
What is the feeding material for Powder Bed Fusion PBF
Metal / Composite powders
What are the mechanisms of PBF
Laser melts powders. Powders are spread out beforehand
What is the feeding material for material jetting
Photo polymers
What are the mechanisms for material
In situ formation of cross-linked networks induced by light, UV, etc
What is the feeding material for binder jetting
plastics or ceramics (powder form) and binder (liquid form)
Mechanisms of binder jetting
Powder based materials are glued by binders
Feeding material of sheet lamination
Paper, plastic, metal, cellulose, etc
